util.promisify where callback takes multiple arguments

promisify-multiple-args.js

const {promisify} = require('util');
const child = require('child_process');
const exec = promisify(child.exec);

exec('echo "Hello world"').then(
    result => console.log(result), // Prints { stdout: 'Hello world\n', stderr: '' }
    error => console.error(error)
);